CVE-2026-89694High· 7.0▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: nfsd: check client ownership when cancelling a copy-notify stateid On the OFFLOAD_CANCEL path (clp != NULL), manage_cpntf_state() freed the target cpntf state without …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 38.5 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
— → 5.3
none → medium
— → 5.3
none → medium
— → 5.3
none → medium
5.3 → 7
medium → high
Last analysed / modified upstream
0.2% → 0.2%
In the Linux kernel, the following vulnerability has been resolved:
nfsd: check client ownership when cancelling a copy-notify stateid
On the OFFLOAD_CANCEL path (clp != NULL), manage_cpntf_state() freed the target cpntf state without checking ownership. The lookup key st->si_opaque.so_id is allocated cyclically (guessable) and the embedded clientid is the fixed per-net nn->s2s_cp_cl_id, so any authenticated NFSv4.2 client could cancel and free another client's copy-notify stateid.
Compare the creating clientid recorded in state->cp_p_clid against the requesting client's cl_clientid and return nfserr_bad_stateid on a mismatch instead of freeing the entry.
Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < 88daaed26e17e1c7e851859b5bbb4f0e1ab6d0e9Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < 81b2cfe767943922eca906a2a5af23a0ce5d0f35Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < 6bba72b8ee68ad631b94bd439592cba46de54d7dLinux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < 75268f6cfe26b09a7e4d3216367e87fe9e2a26aaLinux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < b1eca07303594ca27f5dc360a6946bd7e1f5b04cLinux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < b42dc26a14b4ad5d6daaada11ec4c70744141c25Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < d801906165cb5cc250d5cbe44935594e170be3e2Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < 6bdbfab96e0cf25e5f57dac5c09dc1749751a4bfLinux 5.6Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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